Which component is used for yaw axis control of the aircraft?

Which component is used for yaw axis control of the aircraft?

• A. Cyclic grip
• B. Trim actuators
• C. Swashplate
• D. PEDALS

Answer: (D)

Yaw motion is rotation about the vertical axis, and in a helicopter that is achieved by changing the anti-torque thrust generated by the tail rotor. The pedals directly control this anti-torque system, adjusting how much thrust the tail rotor produces so the fuselage can yaw left or right as commanded. The other controls operate differently: the cyclic grip tilts the main rotor disk to move the helicopter in the desired direction, the swashplate distributes blade pitch to achieve those tilts and motions, and the trim actuators fine-tune stability but don’t actively command yaw.

Yaw motion is rotation about the vertical axis, and in a helicopter that is achieved by changing the anti-torque thrust generated by the tail rotor. The pedals directly control this anti-torque system, adjusting how much thrust the tail rotor produces so the fuselage can yaw left or right as commanded. The other controls operate differently: the cyclic grip tilts the main rotor disk to move the helicopter in the desired direction, the swashplate distributes blade pitch to achieve those tilts and motions, and the trim actuators fine-tune stability but don’t actively command yaw.